免费新概念英语视频课程在哪下载教程全集第一册-第四册
更新时间:2022-06-14 09:55点击:
免费新概念英语视频课程在哪下载教程全集第一册-第四册
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10倍速抗遗忘轻松记单词下载
https://pan.baidu.com/s/1A5qOEhDKxgq
【Key structures】
Must, Have (got) to and Need
情态动词must(必须,不得不)的否定式 mustn't(不能、不准),must还可用于表示推测:
① 对现在和将来的推测:must +动词用原形
② 对正在发生的事情的推测:must be doing
③ 对过去的推测:must have done
④ 对过去正在发生的事情的推测:must have been doing
用must的一般疑问句可以用must/have to或needn’t来回答,而不用mustn’t:
Must I set off now?Yes, you must / have to.
No, you needn’t.
mustn’t表示绝对禁止,在说话人看来,根本没选择余地: “不必要”可用needn’t,don’t have to来表示:
needn’t = don’t have to
needn’t have done = didn’t have to
You needn’t / don’t have to work such long hours.
英语中的need有两种词性,一个是普通动词(需要),一种是情态动词。need的否定形式对应也有两种: needn't 不必(情态动词need的否定); don't need 不需要(普通动词need的否定)。
need I...?(情态) / do I need...? 实义动词
在实义动词后面再加一个实义动词, 就在后面加to do.Need I go out? = Do I need to go out? 情态动词后面不能直接用名词做宾语,实义动词后面可以直接加名词, 故need 后面如是名词, 则这个need 为实义动词
例 : He__c__follow me .
a doesn’t need b needn’t to c didn’t need to d. needs
need用于疑问句时,问者往往希望得到否定的回答: Need you leave so soon? 你有必要这么早就走吗?
用need的一般疑问句的肯定形式的回答可以用must/had to,否定形式的回答可以用needn’t:
Need I type this letter again?
Yes, you must. / No, you needn’t.
Need you have told him about my plans?
Yes, I had to. / No, I needn’t have.
表示必要时,must的语气比need要强:
I must go to the dentist this moring.
这种句型可用来表示说话人让对方选择或允许对方可以不做某事的主观意图。它的完成式和过去式分别为needn’t have,didn’t have to和didn’t need to:
I needn’t have gone to the office yesterday.
I didn’t have to / didn’t need to go to the office yesterday.
need doing sth. 需要被做(用主动表达被动含义)
①这里need属于实义动词, 动词ing相当于名词来理解
②有时态和人称变化,否定式为: don’t need doing
③need doing 表达被动含义, 如: Your shoes need washing. 你的鞋子需(被)洗了
另外want doing也是用主动表示被动含义,它们的主语一定是物, 不是人Your hair needs cuting.
need to be done---主语是人,也可以是物
对比 mustn't和 needn't:
You musn’t read it bed. It’s bad for your eyes.
(be bad for… 对……有害)
Smoking is bad for your health. 抽烟有害你的健康
You mustn't make a noise. The children are asleep. You needn't drive so quickly. We have plenty of time.
=You don't have to(haven't got to) drive so quickly. We have plenty of time.
(责任编辑:谷雨英语单词速记网)
下载地址
http://www.gufengnet.com/1337.html
10倍速抗遗忘轻松记单词下载
https://pan.baidu.com/s/1A5qOEhDKxgq
资料目录
新概念英语视频教程第一册(第1-144课全)
新概念英语视频教程第二册(第1-96课全)
新概念英语视频教程第三册(第1-60课全)
新概念英语视频教程第四册(第1-48课全)
举例
Lesson 41 Do you call that a hat?【Key structures】
Must, Have (got) to and Need
情态动词must(必须,不得不)的否定式 mustn't(不能、不准),must还可用于表示推测:
① 对现在和将来的推测:must +动词用原形
② 对正在发生的事情的推测:must be doing
③ 对过去的推测:must have done
④ 对过去正在发生的事情的推测:must have been doing
用must的一般疑问句可以用must/have to或needn’t来回答,而不用mustn’t:
Must I set off now?Yes, you must / have to.
No, you needn’t.
mustn’t表示绝对禁止,在说话人看来,根本没选择余地: “不必要”可用needn’t,don’t have to来表示:
needn’t = don’t have to
needn’t have done = didn’t have to
You needn’t / don’t have to work such long hours.
英语中的need有两种词性,一个是普通动词(需要),一种是情态动词。need的否定形式对应也有两种: needn't 不必(情态动词need的否定); don't need 不需要(普通动词need的否定)。
need I...?(情态) / do I need...? 实义动词
在实义动词后面再加一个实义动词, 就在后面加to do.Need I go out? = Do I need to go out? 情态动词后面不能直接用名词做宾语,实义动词后面可以直接加名词, 故need 后面如是名词, 则这个need 为实义动词
例 : He__c__follow me .
a doesn’t need b needn’t to c didn’t need to d. needs
need用于疑问句时,问者往往希望得到否定的回答: Need you leave so soon? 你有必要这么早就走吗?
用need的一般疑问句的肯定形式的回答可以用must/had to,否定形式的回答可以用needn’t:
Need I type this letter again?
Yes, you must. / No, you needn’t.
Need you have told him about my plans?
Yes, I had to. / No, I needn’t have.
表示必要时,must的语气比need要强:
I must go to the dentist this moring.
这种句型可用来表示说话人让对方选择或允许对方可以不做某事的主观意图。它的完成式和过去式分别为needn’t have,didn’t have to和didn’t need to:
I needn’t have gone to the office yesterday.
I didn’t have to / didn’t need to go to the office yesterday.
need doing sth. 需要被做(用主动表达被动含义)
①这里need属于实义动词, 动词ing相当于名词来理解
②有时态和人称变化,否定式为: don’t need doing
③need doing 表达被动含义, 如: Your shoes need washing. 你的鞋子需(被)洗了
另外want doing也是用主动表示被动含义,它们的主语一定是物, 不是人Your hair needs cuting.
need to be done---主语是人,也可以是物
对比 mustn't和 needn't:
You musn’t read it bed. It’s bad for your eyes.
(be bad for… 对……有害)
Smoking is bad for your health. 抽烟有害你的健康
You mustn't make a noise. The children are asleep. You needn't drive so quickly. We have plenty of time.
=You don't have to(haven't got to) drive so quickly. We have plenty of time.
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